CVE-2021-22945 Information

Description

When sending data to an MQTT server libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Reference

https://hackerone.com/reports/1269242 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/ https://www.oracle.com/security-alerts/cpuoct2021.html https://security.netapp.com/advisory/ntap-20211029-0003/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/ https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://support.apple.com/kb/HT213183 http://seclists.org/fulldisclosure/2022/Mar/29 When sending data to an MQTT server libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again. cpe:2.3:a:haxx:libcurl::::::::

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1